YOKOHAMA, Japan — Nissan will have vehicles packed with autonomous driving technology by 2020 but whether people will be able to drive them on roads is up to government regulators, Chief Executive Carlos Ghosn said today.

Many of the world’s automakers, and companies outside the auto industry such as Google, are working on technologies that allow cars to navigate without human intervention.

Ghosn said good progress is being made toward the Japanese automaker’s goal of delivering that technology by 2020.

“Our cars will be ready,” he said.

The bigger hurdle for such vehicles becoming readily available to consumers is approval from regulators around the world, he told reporters.